Ed Hannigan Books

MARVEL MASTERWORKS: OMEGA THE UNKNOWN VOL. 1

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In the 1970s, writer Steve Gerber revolutionized comics. His innovative work on MAN-THING, DEFENDERS and HOWARD THE DUCK opened creative avenues that excited readers and inspired a generation of cr...

Cloak Dagger Omnibus

By Bill Mantlo, Ed Hannigan, Al Milgrom, Peter B. Gillis, Chris Claremont

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Black Panther Epic Collection

By Ed Hannigan, Peter B. Gillis, Chris Claremont, John Byrne

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Black Panther Epic Collection

By Ed Hannigan, Jack Kirby, Peter B. Gillis, Chris Claremont

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Marvel Masterworks

By Stan Lee, Ed Hannigan, Jack Kirby, Steve Ditko, John Byrne

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Marvel Masterworks

By David Anthony Kraft, Bill Mantlo, Ed Hannigan, Marv Wolfman, Roger Stern

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Marvel Masterworks Vol. 2

By Ed Hannigan, Jerry Bingham, Marvel Comics, Chris Claremont, John Byrne

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Marvel Masterworks

By David Anthony Kraft, Ed Hannigan, Jo Duffy, Sal Buscema, Herb Trimpe

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Marvel Verse

By Ed Hannigan, Peter B. Gillis, Jeff Parker

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Alice Cooper

By Nacho Tenorio, David Mack Undifferentiated, Eman Casallos, Brandon Jerwa, Joe Harris

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.